How to Redirect Output to Input in Perl

When Perl generates output in a script, it is often useful to redirect that output back into the script so it can be used as input for another function. This type of redirection is done with a simple but powerful symbol that is used to redirect output from virtually any source and pump it into the input field of another function or processing unit.

Instructions

1. Open your Perl script.

2. Set up your output function as a variable. For example

   myOutVariable

3. Create a new variable to accept the output as input. For this example

   new Var myInVariable;

4. Send the output from the first variable into the second through the "pipe" symbol:

   myOutVariable | myInVariable

Tips & Warnings

• This method can be used with function inputs and outputs as well.